Hose coupling



- July 21, 1936; B G|SH 2,048,116

HOSE COUPLING Fil ed Feb. 21, 1935 INVENTOR.

gavzzkZfl 6219.6.

ATTORNEY.

socketifi'and the threaded'portionextendhg therebeyond. Whensoassembledthebodyissubiectedto pressure so as to compress or squees eits walls and reducethe diameter of the body. vThis causes the wall of the hoseto be squeezed between the wall oi! the body and tail-piece and interlocks the reinforcement of the hose with the grooved part or the tail-piece. The squeezing also causesthe thereof is caused to how. so that the end wall. material is forced against and around the neck oi the tail-piece. In this way the end wall of the hose is'securely locked to the tail-piece while the hose is locked between the wall of the body end the tail-piece with the reinforcement interlocked with the grooves of the tell-piece. 3' It will be noted i; there is a substantial amount ofthe materialoi the wall of the hose is desirable because should prwsureleek upwardly alongside the tail-piece pest the reinforcement, the materisi or thermal! of the hose outside -the reinforcement and adjacent the inner mde of the sndwnllotthebody. 4. The modification oi the invention shown in First. 6 and 7 is similar to that sl reedy described. -The form described providess hose having a coupling secured thereto which has a male connecting thread suehss 28. we form of the invention now to he described provides as female couplingthreed. A body is represenmd st dd and this has a here o provide an annular smrt or well 62. The bore is adapted to. receive the 'end of the hose and an end wall it has a socket to andstamdfecase hes a stem and on so I . male bot-cits. so A taii piece 82 in this necked, similar in important respects to that of tail-piece idextends upwardly from the tier-rt so as shown.

In this form of theinvention'the' parts are assembled as follows. Thetail-piece B2 is inserted in a hose H, which ispreoared as ezplainedzwith reference to Fig. 3. and the assembledend oi the hose H and tail-piece I! are inserted in the body;

6 a as shown in Fig.3 with the neck so of the ten piece disposed in the socket bore 58. The wail'of thebody is compressed or squeered as in the former case so that .the neck 10 of the tail-piece is locked to the by being gripped by the end. wall thereof while the wall 015- hose and reinforcement are locked to the I as before F v I ,1 I v Inboth c'asesthe neck of the stem is preferably tapered as shown so that when it is locked body it is-capable of resistins endwisepulling 4 strains-"This is animportant feature downs end wall 8 of the body to be distorted, or the metal outside the enlarged port of the tail-piece. This.

well of the body serves no a sail to prevent pres-- sure leaking downwardly between the tell-piece enlarged part It providm with grooves so. A

hose and couplings otthis type are notonly-subiected to extremely'high pressures, say to the order of 20,000 pounds or. more per square inch but while under these pressures there-are more or less'puilingstrainsappiiedtothehosewhich 5 tends tocause the coupling to be bloom from the hose. By securely locking the tail-piece'to the body and then'locking the hosebetween the tailpieoe and body with the reinforcement of the hose interlocked with the grooves of the tail-piece the construction is capable of withstanding extremely high pressures and the pulling strains as well. The coupling in general is compressed to s more or less uniform diameter so that, by means of the tapering part of the tail-Piece. the part of the hose between the tapering port and the shit of the coupling is embraced with gradually incmsingi comprmsion. That is to ssy, the com- 'pression along the tsil-piece'over the part there,

of which is tapered is such that the hose wall is 20 States is: v7

In combination with a hose having a. bore, a

substantially tubular coupling body member including a lower main part embracing an endmost 5, V

- portion of the hose and on upper end port integrsl with the main part and of less length. than the main part, the bore of the end pertbe ing oi substantially uniform diameter endoi less diameterthanthebo' oi themainpartsoasto provide an internal s oulder therebetween, the ."diameter of the said bore ofthemain part being also substantially uniform, and a; semrate hollow tail-piece member including a lower stem andlen intermediate enlarged part both extending into. the bore of the said endmost portion of the hose r-and an upper neck portion extending through said bore of the end 'part of the body member,

said intermediate part of the tail-piece member being provided with alternate grooves and ridges which engage the hose, said tail-piece member being of less-lengtlithan said body member, and said body member'being in'diameter so, that. the said endmost portion ofthe hose is squeezed between said main part thereof and said stem and intermedisterpart oi the tailrpiece member and the upper neck portion oi the tailpiece member is squeezed and-lo'ckedln place by body member. 

